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Millstone says faulty relay cause of power loss

Published on NewsOK Modified: May 27, 2014 at 5:33 pm •  Published: May 27, 2014

HARTFORD, Conn. (AP) — A malfunctioning relay has been identified as the cause of a weekend power outage at Connecticut's nuclear plant, which supplies half of all power in the state and 12 percent throughout New England, a spokesman said Tuesday.

The Millstone Power Station is still not operating though power has been restored. Officials don't know yet when operations will resume and it will have to go through many steps before it does.

No emergency actions were needed and the reliability of the region's high-voltage power grid was maintained, said Marcia Blomberg, a spokeswoman for ISO-New England, which runs the grid.

Ken Holt, a spokesman for the Millstone plant in Waterford, said the culprit was a relay on a transmission line that carries power to and from the Waterford plant.

"It didn't do what it's supposed to do," he said.

An "unusual event," the lowest of four levels of emergency classification used by the federal Nuclear Regulatory Commission, was declared at 7:15 a.m. Sunday.

The plant's emergency diesel generators activated and powered safety systems. Electrical power was restored several hours after it failed at the plant, owned by Dominion Resources Inc.

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